JP7505884B2 - Lens drive device, camera module including same, and optical device - Google Patents

Description

The embodiments relate to a lens driving device, a camera module including the same, and an optical device.

Camera modules that are ultra-compact and consume little power are difficult to apply the voice coil motor (VCM) technology used in existing general camera modules, so research into this topic has been actively conducted.

In the case of camera modules mounted on small electronic products such as smartphones, the camera module may be frequently subjected to shocks during use, and slight shaking may occur in the camera module due to the user's shaking hands while taking a picture. In consideration of these issues, technology has recently been developed to install additional hand tremor prevention means in the camera module.

The embodiment provides a lens driving device that prevents the second coil from being broken or damaged due to an external impact, allows the second coil to be soldered to the upper spring without any additional wiring arrangement, prevents the second coil from moving or shaking when soldering the upper spring to the second coil, and improves solderability, as well as a camera module and optical device including the same.

The lens driving device according to the embodiment includes a housing; a bobbin disposed in the housing; a first coil disposed on the bobbin; a magnet disposed in the housing; an upper spring coupled to an upper portion of the bobbin and an upper portion of the housing; a circuit board disposed on the lower side of the housing; a support member electrically connecting the upper spring and the circuit board; and a damper disposed on the upper spring; the upper spring includes an outer portion coupled to the housing; a first coupling portion coupled to the support member; and a first coupling portion connecting the outer portion and the first coupling portion; the first coupling portion further includes a first extension portion extending from the first coupling portion in a direction toward the outer portion, the first extension portion being spaced apart from the outer portion, and the damper connecting the first extension portion to the outer portion.

The outer portion may be coupled to the housing at a corner of the housing.

The outer portion may include a second coupling portion disposed on a first side of the housing and coupled to the housing; a third coupling portion disposed on a second side adjacent to the first side of the housing and coupled to the housing; and a second connecting portion connecting the second coupling portion to the third coupling portion; and the first connecting portion may include a third connecting portion connecting the second coupling portion to the first coupling portion; and a fourth connecting portion connecting the third coupling portion to the first coupling portion.

The damper may be disposed between the first extension and the second connection. The first extension may be spaced apart from each of the third and fourth connections.

The first extension portion may include a second extension portion extending from the first connecting portion to the second connecting portion; a third extension portion extending from the first connecting portion to the third connecting portion; and a fourth extension portion extending from the first connecting portion to the second connecting portion.

The first extension portion may include a portion having a width that increases as it extends from the first connecting portion toward the outer portion.

The portion of the first extension that corresponds to the outer portion may include a shape that corresponds to the shape of the outer portion.

The first connecting portion includes a connecting region that is connected to the support member, and a first length of the first connecting portion is longer than a second length of the first connecting portion, the first length being a distance from the connecting region to one end of the first connecting portion that extends in the extension direction of the first extension portion, and the second length being a distance from the connecting region to the other end of the first connecting portion that extends in the opposite direction to the extension direction of the first extension portion.

The lens driving device may further include a second coil disposed on the outer surface of the side of the housing and generating an induced voltage by interaction with the first coil. The housing may include a first protrusion and a second protrusion disposed on the upper surface, the upper spring may include a first spring and a second spring, and a portion of the second coil may be wound at least one turn around the first protrusion and connected to the first spring. In addition, another portion of the second coil may be wound at least one turn around the second protrusion and connected to the second spring.

A lens driving device according to another embodiment may include a housing including a first protrusion and a second protrusion arranged on an upper surface; a bobbin arranged within the housing; a first coil arranged on the bobbin; a magnet arranged in the housing; a second coil arranged on an outer surface of the housing; and a first spring and a second spring coupled to an upper portion of the bobbin and an upper portion of the housing; a portion of the second coil may be wound around the first protrusion at least once and connected to the first spring, and another portion of the second coil may be wound around the second protrusion at least once and connected to the second spring.

The second coil may include a first portion disposed on the outer surface of the housing; a second portion wound around the first protrusion; a third portion connecting one end of the first portion to one end of the second portion; a fourth portion wound around the second protrusion; and a fifth portion connecting the other end of the first portion to one end of the fourth portion.

The lens driving device according to the other embodiment may further include a first solder part electrically connecting the second portion of the second coil to the first spring; and a second solder part electrically connecting the fourth portion of the second coil to the second spring.

The second coil may further include a sixth portion extending from the other end of the second portion to the first spring, and a seventh portion extending from the other end of the fourth portion to the second spring. The lens driving device may further include a first solder portion electrically connecting the sixth portion to the first spring, and a second solder portion electrically connecting the seventh portion to the second spring.

The housing includes a first side, a second side, a third side, and a fourth side; a first corner portion located between the first side and the second side, a second corner portion located between the second side and the third side, a third corner portion located between the third side and the fourth side, and a fourth corner portion located between the fourth side and the first side; a first protrusion disposed on an upper surface of the first corner portion and coupled to the first spring; a second protrusion disposed on an upper surface of the first side and coupled to the first spring; a third protrusion disposed on an upper surface of the second corner portion and coupled to the second spring; and a fourth protrusion disposed on an upper surface of the third side and coupled to the second spring; and the first side and the third side may face each other, and the second side and the fourth side may face each other.

The first protrusion may be provided on the first side portion located between the first protrusion and the second protrusion, and the second protrusion may be provided on the third side portion located between the third protrusion and the fourth protrusion.

The outer surface of the housing may include a first groove in which a first portion of the second coil is disposed; a second groove connected to the first groove in which a third portion of the second coil is disposed; and a third groove connected to the first groove in which the fifth portion of the second coil is disposed.

The first spring may include a first region disposed at the first corner portion and coupled to the first protrusion; and a second region extending from the first region to the upper surface of the first side portion and coupled to the second protrusion; and the second spring may include a third region disposed at the second corner portion and coupled to the third protrusion; and a fourth region extending from the third region to the upper surface of the third side portion and coupled to the fourth protrusion.

The second groove may be located on the outer surface of a first side of the housing, the third groove may be located on the outer surface of a third side of the housing, and the second groove and the third groove may be located above the first groove.

The second coil may not overlap the first coil in a direction parallel to the optical axis, and the first portion of the second coil may not overlap the first coil in a direction perpendicular to the optical axis.

The embodiment prevents the second coil from being broken or damaged due to external impact, allows the second coil to be soldered to the upper spring without any additional wiring arrangement, and prevents the second coil from moving or shaking when soldering the upper spring to the second coil, improving solderability.

FIG. 2 is a perspective view of the lens driving device according to the embodiment. FIG. 2 is an exploded view of the lens driving device shown in FIG. FIG. 2 is a coupling diagram of the lens driving device of FIG. 1 excluding a cover member. FIG. 2 is a first perspective view of the bobbin and the first coil shown in FIG. 1 . FIG. 2 is a second perspective view of the bobbin and the first coil shown in FIG. 1 . FIG. 2 is a first perspective view of the housing shown in FIG. 1 . FIG. 2 is a second perspective view of the housing shown in FIG. 1 . 4 is a cross-sectional view of the lens driving device shown in FIG. 3 taken along the line AB. FIG. 3 is a perspective view of the upper elastic member shown in FIG. 2 . FIG. 8 is an enlarged view of a first outer frame of the first upper spring shown in FIG. 7 . 3 is a perspective view of an upper elastic member, a lower elastic member, a third coil, a circuit board, and a base of FIG. 2 ; FIG. FIG. 2 is an exploded perspective view of a third coil, a circuit board, a base, first and second position sensors, and an amplifier. FIG. 4 is a plan view of FIG. FIG. 12 is a perspective view of a first dotted line portion of FIG. 11 . FIG. 12 is a perspective view of a second dotted line portion of FIG. 11 . 13A and 13B show an extension and damper according to another embodiment. 11 is a diagram showing mutual inductance depending on the separation distance between a first coil and a second coil. FIG. FIG. 2 is an exploded perspective view of a camera module according to an embodiment. 1 is a perspective view of a portable terminal according to an embodiment; FIG. 17 is a block diagram of the portable terminal shown in FIG. 16.

Hereinafter, each embodiment can be clearly shown through the accompanying drawings and the description of the embodiments. In the description of the embodiments, when it is described that each layer (film), region, pattern or structure is formed "on" or "under" the substrate, each layer (film), region, pad or pattern, "on" and "under" all include being formed "directly" or "indirectly through another layer". In addition, the above or below of each layer will be described with reference to the drawings.

Sizes in the drawings may be exaggerated, omitted, or shown roughly for convenience and clarity of description. Also, the size of each component does not entirely reflect the actual size. Also, the same reference numbers refer to the same elements throughout the description of the drawings.

For ease of explanation, the lens driving device according to the embodiment will be explained using a Cartesian coordinate system (x, y, z), but other coordinate systems may be used and the embodiment is not limited thereto. The x-axis and y-axis in each drawing refer to directions perpendicular to the z-axis, which is the optical axis direction, and the z-axis direction, which is the optical axis direction or a direction parallel to the optical axis, can be referred to as the "first direction", the x-axis direction as the "second direction", and the y-axis direction as the "third direction".

A "hand tremor correction device" applied to a small camera module of a mobile device such as a smartphone or tablet PC can refer to a device configured to prevent the outline of a captured image from being unclear due to vibrations caused by the trembling of the user's hand when taking a still image.

An "autofocusing device" is a device that automatically focuses an image of a subject on an image sensor surface. Such hand tremor correction devices and autofocusing devices can be configured in various ways, but the lens driving device according to the embodiment can perform hand tremor correction and/or autofocusing operations by moving an optical module consisting of at least one lens in a first direction parallel to the optical axis, or in a plane formed by second and third directions perpendicular to the first direction.

Figure 1 is a perspective view of a lens driving device 100 according to an embodiment, Figure 2 is an exploded view of the lens driving device 100 shown in Figure 1, and Figure 3 is an assembled view of the lens driving device 100 of Figure 1 excluding the cover member 300.

Referring to Figures 1 to 3, the lens driving device 100 may include a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, a lower elastic member 160, and a second coil 170.

The lens driving device 100 may further include a circuit board 250.

The lens driving device 100 may further include a support member 220.

The lens driving device 100 may further include a third coil 230 and each position sensor 240. The lens driving device 100 may further include a cover member 300 and a base 210.

The following describes the cover member 300.

The cover member 300 accommodates the other components 110, 120, 130, 140, 150, 160, 170, 220, 230, and 250 within a storage space formed together with the base 210.

The cover member 300 may be box-shaped with an open bottom and including a top plate and side plates. The bottom of the cover member 300 may also be coupled to the top of the base 210.

The cover member 300 may have an opening in the upper plate that exposes the lens (not shown) coupled to the bobbin (110) to external light.

The material of the cover member 300 may be a non-magnetic material such as SUS to prevent the cover member 300 from sticking to the magnet 130. However, the cover member 300 may be made of a magnetic material to function as a yoke that increases the electromagnetic force caused by interaction with the first coil 120.

Next, we will explain the bobbin 110.

A lens or lens barrel may be attached to the bobbin 110. The bobbin 110 is also disposed inside the housing 140.

Figure 4a is a first perspective view of the bobbin 110 and the first coil 120 shown in Figure 1, and Figure 4b is a second perspective view of the bobbin 110 and the first coil 120 shown in Figure 1.

Referring to Figures 4a and 4b, the bobbin 110 may include a first protrusion 111 protruding in a first direction from the upper surface, and a second protrusion 112 protruding in a second and/or third direction from the outer circumferential surface of the bobbin 110.

The first protrusion 111 of the bobbin 110 may include a first guide portion 111a and a first stopper 111b . The first guide portion 111a of the bobbin 110 may serve to guide an installation position of the upper elastic member 150. For example, the first guide portion 111a of the bobbin 110 may guide a first frame connection portion 153 of the upper elastic member 150.

The second protrusion 112 of the bobbin 110 may be formed to protrude from the outer peripheral surface 110b of the bobbin 110 in the second and/or third direction. In order to avoid spatial interference with the first frame connection portion 153, the upper surface of the second protrusion 112 may be located lower than the upper surface of the bobbin 110. For example, an escape groove may be provided in the second protrusion 112. Also, the escape groove may be a groove recessed from the upper surface of the bobbin 110.

The bobbin 110 may have a second stopper 116 protruding from the lower surface.

The bobbin 110 may include sides 110b-1 that correspond to or face the magnets 130, and sides 110b-2 that are located between the sides 110b-1.

The bobbin 110 may have at least one first coil groove (not shown) in which the first coil 120 is arranged or installed on the outer circumferential surface 110b. The shape and number of the first coil grooves may correspond to the shape and number of the first coils 120 arranged on the outer circumferential surface 110b of the bobbin 110. In other embodiments, the bobbin 110 may not have a first coil groove, and the first coil 120 may be wound and fixed directly on the outer circumferential surface 110b of the bobbin 110.

In addition, a protrusion 113 may be provided on the upper surface of the bobbin 110 to engage with the hole 151a of the first inner frame 151 of the upper elastic member 150.

The protrusion 113 may include a first upper protrusion 113a and a second upper protrusion 113b spaced apart from each other on each side 110b-1 of the bobbin 110.

The first upper protrusion 113a is for fusing and bonding with the first inner frame 151 of the upper elastic member 150, and the second upper protrusion 113b is for electrically connecting with the first inner frame 151 of the upper elastic member 150 through solder or a conductive adhesive material. For example, the diameter of the first upper protrusion 113a may be larger than the diameter of the second upper protrusion 113b.

The bobbin 110 may have a first lower coupling groove 117 on its lower surface that is coupled and fixed to the hole 161a of the lower elastic member 160. In another embodiment, a support protrusion may be provided on the lower surface of the bobbin 110 to couple with the hole 161a of the lower elastic member 160.

The inner peripheral surface 110a of the bobbin 110 may be provided with a thread 11 for coupling with a lens or a lens barrel. The thread 11 may be formed on the inner peripheral surface of the bobbin 110 while the bobbin 110 is fixed using a jig or the like, and the upper surface of the bobbin 110 may be provided with jig fixing grooves 15a, 15b. For example, the jig fixing grooves 15a, 15b may be provided on the upper surfaces of each of the opposing side portions 110b-2 of the bobbin 110, but are not limited thereto.

Next, we will explain the first coil 120.

The first coil 120 is disposed on the outer peripheral surface 110b of the bobbin 110 and may be a driving coil that electromagnetically interacts with the magnet 130 disposed in the housing 140.

A drive signal (e.g., a drive current or voltage) can be applied to the first coil 120 to generate an electromagnetic force through interaction with the magnet 130.

The drive signal applied to the first coil 120 may be an AC signal, e.g., an AC current. For example, the drive signal provided to the first coil 120 may be a sinusoidal signal or a pulse signal (e.g., a PWM (Pulse Width Modulation) signal).

Or, in other embodiments, the drive signal applied to the first coil 120 can include an AC signal and a DC signal.

The AF movable part or mover can be moved in a first direction by the electromagnetic force caused by the interaction between the first coil 120 and the magnet 130. By controlling the strength and/or polarity (e.g., the direction in which current flows) of the drive signal applied to the first coil 120 and adjusting the strength and/or direction of the electromagnetic force caused by the interaction between the first coil 120 and the magnet 130, the movement of the AF movable part in the first direction can be controlled, thereby performing an autofocusing function.

The AF movable part or movable element may include a bobbin 110 that is elastically supported by an upper elastic member 150 and a lower elastic member 160, and each component that is attached to the bobbin 110 and moves with the bobbin 110. For example, the AF movable part may include a bobbin 110, a first coil 120, and a lens (not shown) that is attached to the bobbin 110.

The first coil 120 may be wound or arranged around the outer circumferential surface of the bobbin 110 so as to rotate clockwise or counterclockwise around the optical axis. In another embodiment, the first coil 120 may be embodied in the form of a coil ring wound or arranged clockwise or counterclockwise around an axis perpendicular to the optical axis. In addition, the number of coil rings may be the same as the number of magnets 130, but is not limited thereto.

The first coil 120 may be electrically connected to at least one of the upper elastic member 150 and the lower elastic member 160, and may be electrically connected to the circuit board 250 through the upper elastic member 150 or the lower elastic member 160 and the support member 220. For example, the first coil 120 may be electrically connected to the third and fourth upper springs 150-3 and 150-4.

Next, we will explain the housing 140.

The housing 140 houses the bobbin 110 on which the first coil 120 is arranged.

Figure 5a is a first perspective view of the housing 140 shown in Figure 1, Figure 5b is a second perspective view of the housing 140 shown in Figure 1, and Figure 6 is a cross-sectional view of the lens driving device 110 shown in Figure 3 in the AB direction.

Referring to Figures 5a, 5b and 6, the housing 140 may be generally column-shaped with an opening and may include a number of sides 141, 142 that form the opening.

For example, the housing 140 may include spaced apart sides 141 and spaced apart sides 142. Each side 141 of the housing 140 may be disposed or located between two adjacent sides 142, the sides 142 may be connected to each other, and may include a flat surface of a certain depth.

Each side 142 of the housing 140 can be described as a "corner member" in that its position corresponds to a corner region of the housing 140.

For example, in FIG. 5a, the housing 140 can include first to fourth side portions and first to fourth corner portions 501a to 501d.

The first side and the third side can face each other in the second direction, and the second side and the fourth side can face each other in the third direction.

The first corner portion 501a can be positioned between the first and second sides of the housing 140, the second corner portion 501b can be positioned between the second and third sides of the housing 140, the third corner portion 501c can be positioned between the third and fourth sides of the housing 140, and the fourth corner portion 501d can be positioned between the fourth and first sides of the housing 140.

Each side 141 of the housing 140 can correspond to or face each side 110b-1 of the bobbin 110, and each side 142 of the housing 140 can correspond to or face each side 110b-2 of the bobbin 110, but is not limited to this.

Magnets 130 (130-1 to 130-4) may be arranged or installed on each side 141 of the housing 140. In addition, support members 220 may be arranged on each side 142 of the housing 140.

The housing 140 may include magnet mounts 141a provided on the inner surface of each side 141 to support or house each of the magnets 130-1 to 130-4.

The outer surface of the housing 140 may be provided with a first groove 148 for winding or housing the second coil 170.

For example, the first groove 148 of the housing 140 may be recessed from the outer surface of each side portion 141 and the outer surface of each side portion 142 of the housing 140 and may be ring-shaped, but is not limited thereto.

For example, the first groove 148 of the housing 140 may be provided on the outer surface of each side portion 141 and on the upper end of the outer surface of each side portion 142.

For example, the first groove 148 of the housing 140 may be spaced apart from the upper surface of the housing 140 and provided on each of the magnets 130-1 to 130-4 arranged on the housing 140.

At least one of the sides 141 of the housing 140 may have grooves 61a, 61b, 61.

For example, the second groove 61a may be provided on a first side of the housing 140. Also, the third portion 17c of the second coil 170 may be disposed in the second groove 61a. The third groove 61b may be provided on a third side of the housing 140. Also, the fifth portion 17e of the second coil 170 may be disposed in the third groove 61b.

For example, the grooves 61 may be disposed on each of the first to fourth sides of the housing 140.

For example, grooves 61a, 61b, and 61 may be through grooves that penetrate side portion 141 of housing 140 and are open at the top.

In FIG. 5a, two spaced apart grooves 61a, 61b, 61 are provided on the side 141 of each housing 140, but this is not limited thereto.

Each of the grooves 61a, 61b, 61 may be connected to the first groove 148 and positioned at the top of the first groove 148.

For example, the second groove 61a can be disposed between the protrusion 143b disposed in the first corner portion 501a and the protrusion 31a disposed in the first side portion of the housing 140 adjacent to the first corner portion 501a.

For example, the third groove 61b can be disposed between the protrusion 143b1 disposed in the second corner portion 501b and the protrusion 31b disposed in the third side portion of the housing 140 adjacent to the second corner portion 501b.

The groove 61 may also be located between the protrusion 32b arranged on the third side of the housing 140 and the protrusion 143b arranged on the third corner portion 501c, and between the protrusion 32a arranged on the first side of the housing 140 and the protrusion 143a arranged on the fourth corner portion 501d.

For example, grooves 61a, 61b, and 61 may be located at the top of first groove 148 in which first portion 17a of second coil 170 is disposed, and the bottom of grooves 61a, 61b, and 61 may have an opening connected to first groove 148.

The first and second grooves 61a, 61b of the housing 140 can serve as passages through which a part of the second coil 170 and another part of the second coil 170 pass, and the grooves 61a, 61b, 61 of the housing 140 can serve as injection ports for injecting adhesive to attach the magnet 130 to the housing 140.

The housing 140 may have a guide protrusion 65 on the inner surface for guiding the adhesive injected into the grooves 61a, 61b, and 61. The guide protrusion 65 may serve to prevent the adhesive from flowing down into the inside of the housing 140.

Each side 141 of the housing 140 may be arranged parallel to the side plate of the cover member 300. Each side 142 of the housing 140 may be provided with a hole 147a through which the support member 220 passes. The hole 147a may have a shape in which the diameter gradually increases from the upper surface of the housing 140 to the lower surface. This is to make it easier to place a damper, which will be described later, in the hole 147a.

In addition, a second stopper 144 may be provided on the upper surface of the housing 140 to prevent direct collision with the inner surface of the cover member 300. For example, the second stopper 144 may be disposed at each of the first to fourth corner portions 501a to 501d of the housing 140, but is not limited thereto.

In addition, when the upper elastic member 150 is disposed on the upper surface of the housing 140, the housing 140 may have a second guide portion 146 on the upper surface to guide the installation position of the first outer frame 152 of the upper elastic member 150.

The second guide portion 146 may be disposed at each corner portion 501a to 501d of the housing 140, spaced apart from the second stopper 144. For example, the second guide portion 146 and the second stopper 144 may face each other in a diagonal direction. Here, the diagonal direction may be a direction from the center of the housing 140 toward the second stopper 144. The second guide portion 146 may also function as a stopper to prevent the upper surface of the housing 140 from directly colliding with the inner surface of the cover member 300.

The housing 140 may have at least one first protrusion 143a, 143b, 143a1, 143b1 provided on the upper surface of each side 142 to couple with holes 152a1, 152a2 of the first outer frame 152 of the upper elastic member 150.

The first protrusions 143a, 143b, 143a1, and 143b1 may be disposed on the upper surface of at least one of the first to fourth corner portions 501a to 501d of the housing 140.

For example, the housing 140 may include first protrusions 143a, 143a1 arranged on one side of the second guide portion 146, and first protrusions 143b, 143b1 arranged on the other side of the second guide portion 146.

For example, the shapes of the first protrusions 143a, 143b may be the same as each other, but are not limited thereto, and at least one of the first protrusions 143a1, 143b1 may have a different shape from the first protrusions 143a, 143b.

In addition, the housing 140 may have at least one second protrusion 32a, 32b provided on the upper surface of each side 142 to engage with the hole 26 of the first outer frame 152 of the upper elastic member 150.

For example, the second protrusions 32a, 32b may be disposed on the upper surfaces of two of the side portions 141 of the housing 140 that face each other, but are not limited thereto.

For example, the second protrusion 32a may be located on one of the sides 141 of the housing 140 adjacent to the first corner portion 501a, for example, on the upper surface of the first side. The second protrusion 32b may be located on another of the sides 141 of the housing 140 adjacent to the second corner portion 501b, for example, on the upper surface of the third side.

For example, the second protrusions 32a, 32b may be located on two sides 141 of the housing 140 that face each other in the second or third direction.

In addition, the housing 140 may have protrusions 31a, 31b provided on the upper surface of each side 141 of the housing 140 for stable fixation of a portion (e.g., the starting wire) and another portion (e.g., the ending wire) of the second coil 170.

For example, the protrusions 31 a and 31 b may be disposed on two opposing sides of each side 141 of the housing 140, for example, on the upper surfaces of the first and third sides of the housing 140. Also, the protrusions 31 a and 31 b may be disposed on the first and third sides of the housing 140 where the second protrusions 32 a and 32 b are located.

For example, the first protrusion 31a may be disposed between the first protrusion 143b disposed in the first corner portion 501a and the second protrusion 32a disposed on the upper surface of the first side portion of the housing 140 adjacent to the first corner portion 501a.

Furthermore, for example, the second protrusion 31b may be disposed between the first protrusion 143b1 disposed in the second corner portion 501b and the second protrusion 32b disposed on the upper surface of the third side portion of the housing 140 adjacent to the second corner portion 501b.

For example, the first groove 61a can be located between the first protrusion 143b arranged in the first corner portion 501a and the first protrusion 31a arranged on the first side of the housing 140 that contacts the first corner portion 501a, and the second groove 61b can be located between the second protrusion 143b1 arranged in the second corner portion 501b and the second protrusion 31b arranged on the third side of the housing 140 that contacts the second corner portion 501b.

This is because the first and second grooves 61a, 61b are located adjacent to corresponding ones of the first and second protrusions 31a, 31b , making it easy to wind one part and the other part of the second coil 170 around the first and second protrusions 31a, 31b .

In addition, the housing 140 may have at least one protrusion 145 provided on the lower surface of each side portion 142 of the housing 140 to be coupled and fixed to the hole 162a of the second outer frame 162 of the lower elastic member 160. For example, the protrusion 145 may be disposed on at least one of the first to fourth corner portions 501a to 501d of the housing 140, but is not limited thereto.

To ensure a path through which the support member 220 passes and to ensure a space for filling with silicone that can act as a damper, the housing 140 may have a groove 142a provided in the lower part of the side portion 142. For example, the groove 142a of the housing 140 may be filled with damper silicone.

The housing 140 may have a third stopper 149 protruding in the second or third direction from the outer surface of each side 141. For example, in FIG. 5a, the housing 140 has two stoppers 149a, 149b spaced apart from each other on the outer surface of each side 141, but is not limited thereto.

The third stopper 149 is intended to prevent the housing 140 from colliding with the inner surface of the side plate of the cover member 300 when the housing 140 moves in the second and third directions.

The housing 140 may further include a fourth stopper (not shown) protruding from the bottom surface to prevent the bottom surface of the housing 140 from colliding with the base 210, the third coil 230, and/or the circuit board 250 described below.

Next, we will explain magnets 130 (130-1 to 130-4).

Each of the magnets 130-1 to 130-4 is disposed on the inside of each of the side portions 141 of the housing 140, but is not limited to this. In other embodiments, each of the magnets 130-1 to 130-4 may be disposed on the outside of each of the side portions 141 of the housing 140.

In the initial position of the bobbin 110, the magnets 130 can be positioned on each side 141 of the housing 140 so as to correspond to or be aligned with the first coil 120 in a direction perpendicular to the optical axis direction.

For example, each magnet 130-1 to 130-4 arranged in the housing 130 can overlap with the first coil 120 in the second direction or the third direction when the bobbin 110 is in the initial position.

Here, the initial position of the bobbin 110 is the initial position of the AF movable part when no power is applied to the first coil 120, and may be the position where the AF movable part is placed as the upper elastic member 150 and the lower elastic member 160 elastically deform only due to the weight of the AF movable part.

In addition, the initial position of the bobbin 110 may be a position where the AF movable part is located when gravity acts in the direction from the bobbin 110 to the base 210, or conversely, when gravity acts in the direction from the base 210 to the bobbin 110. The AF movable part may include the bobbin 110 and each component attached to the bobbin 110, such as the first coil 120.

In other embodiments, the magnet mount 141a may not be provided on each side 141 of the housing 140, and the magnet 130 may be disposed on either the outside or the inside of each side 141 of the housing 140.

The shape of the magnet 130 may be a shape corresponding to each side 141 of the housing 140, for example, a rectangular parallelepiped shape, but is not limited to this.

The magnet 130 may be a monopole magnetized magnet or a bipole magnetized magnet arranged so that the surface facing the first coil 120 is an S pole and the outer surface is an N pole. However, it is not limited to this and can also be configured in the opposite manner.

In the embodiment, the number of magnets 130 is four, but is not limited to this, and the number of magnets 130 may be at least two or more. In addition, the surface of the magnet 130 facing the first coil 120 may be formed as a flat surface, but is not limited to this, and may be formed as a curved surface.

Next, we will explain the upper elastic member 150 and the lower elastic member 160.

The upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140, and elastically support the bobbin 110. In the upper elastic member 150 and/or the lower elastic member 160, the term "elastic member" may be expressed interchangeably as "elastic unit."

For example, the upper elastic member 150 can be coupled to the upper portion, upper surface or upper end of the bobbin 110 and the upper portion, upper surface or upper end of the housing 140, and the lower elastic member 160 can be coupled to the lower portion, lower surface or lower end of the bobbin 110 and the lower portion, lower surface or lower end of the housing 140.

Figure 7 is a perspective view of the upper elastic member 150 shown in Figure 2, Figure 8 is an enlarged view of the first outer frame 152 of the first upper spring 150-1 shown in Figure 7, Figure 9 is a combined perspective view of the upper elastic member 150, lower elastic member 160, third coil 230, circuit board 250 and base 210 of Figure 2, and Figure 10 is a separated perspective view of the third coil 230, circuit board 250, base 210, first and second position sensors 240a, 240b and amplifier 310.

Referring to Figures 7 to 10, at least one of the upper elastic member 150 and the lower elastic member 160 may be divided or separated into two or more pieces.

For example, the upper elastic member 150 may include first to fourth upper springs 150-1 to 150-4 spaced apart from each other. Here, the "upper spring" may also be expressed as "spring."

The upper elastic member 150 and the lower elastic member 160 may be embodied as a leaf spring, but are not limited thereto, and may be embodied as a coil spring, a suspension wire, etc.

Each of the first to fourth upper springs 150-1 to 150-4 may include a first inner frame 151 coupled to the upper portion, upper surface or upper end of the bobbin 110, a first outer frame 152 coupled to the upper portion, upper surface or upper end of the housing 140, and a first frame connection portion 153 connecting the first inner frame 151 and the first outer frame 152.

For example, the first frame connection portion 153 can connect the first outer frame 152, e.g., the third coupling portion 510-2, to the inner frame.

The first and second frame connection parts 153, 163 of the upper and lower elastic members 150, 160 may each be bent at least once or formed into a curved shape to form a pattern of a certain shape. Through the positional changes and minute deformations of the first and second frame connection parts 153, 163, the bobbin 110 may be elastically supported for ascending and/or descending movements in a first direction.

The first outer frame 152 of each of the first to fourth upper springs 150-1 to 150-4 may include an outer portion 510 that is coupled to the housing 140, a first coupling portion 520 that is coupled to the support members 220-1 to 220-4, and a first coupling portion 530 that connects the outer portions 510a to 510d to the first coupling portion 520.

The first coupling portion 520 may include a first extension portion 540 extending from the first coupling portion 520 in a direction toward the outer portions 510a to 510d.

The outer portions 510a-510d may be disposed at the corner portions and at least one adjacent side portion 141 of the housing 140.

For example, the outer portions 510a-510d may be coupled to at least one of a corner portion of the housing 140, any one side portion of the housing 140 adjacent to the corner portion, and any other side portion of the housing 140 adjacent to the corner portion.

For example, the first outer portion 510a may include a second coupling portion 510-1 disposed on a first side of the housing 140 and coupled to the housing 140, a third coupling portion 510-2 disposed on a second side adjacent to the first side of the housing 140 and coupled to the housing 140, and a second connecting portion 510-3 connecting the second coupling portion 510-1 and the third coupling portion 510-2.

At least one first outer frame of the first to fourth upper springs 150-1 to 150-4 may include an outer portion that is not disposed at the corner portion but is disposed at the side of the housing 140, a first coupling portion, and a coupling portion that connects the first coupling portion and the outer portion. In this case, the outer portion may not be coupled to the housing at the corner portion but may be coupled to the housing at the side of the housing adjacent to the corner portion.

The first connecting portion 530 may include a third connecting portion 530a connecting the second connecting portion 510-1 and the first connecting portion 520, and a fourth connecting portion 530b connecting the third connecting portion 510-2 and the first connecting portion 520.

The first extension portion 540 may be spaced apart from the outer portion 510a. The first extension portion 540 may include a portion that becomes wider as it extends from the first coupling portion 520 in a direction toward the outer portion 510a. For example, the first extension portion 540 may include a portion that becomes wider as it extends from the first coupling portion 520 in a direction toward the center point 101 of each of the upper springs 150-1 to 150-4.

For example, the wider portion of the first extension 540 may be fan-shaped. Also, the central angle θ (see FIG. 13) of the fan-shaped first extension 540 may be 40° to 160° when centered on the bonding region 520a. If the central angle θ (see FIG. 13) of the first extension 540 is less than 40°, the effect of improving solderability may be negligible, while if the central angle of the first extension 540 is more than 160°, spatial interference with the first connection portion 530 may occur.

The portion of the first extension 540 that corresponds to the outer portion 510a may include a shape that corresponds to the shape of the outer portion 510a.

For example, the first extension portion 540 may be spaced apart from each of the third connecting portion 530a and the fourth connecting portion 530b.

The first extension portion 540 may include a second extension portion extending from the first connection portion 520 to the second connection portion 510-1, a third extension portion extending from the first connection portion 520 to the third connection portion 510-2, and a fourth extension portion extending from the first connection portion 520 to the second connection portion 510-3.

The damping member 91 can connect the first extension portion 540 and the outer portion 510a. For example, the damping member 91 can be disposed between the first extension portion 540 and the second connecting portion 510-3.

For example, the second coupling part 510-1 may include a hole 152a2 that is coupled to the second protrusion 143b of the housing 140, and the third coupling part 510-2 may include a hole 152a1 that is coupled to the second protrusion 143a of the housing 140.

For example, the second coupling part 510-1 may be located on one side of a reference line (e.g., 501), and the third coupling part 510-2 may be located on the other side of the reference line (e.g., 501).

In the embodiments of FIG. 7 and FIG. 8, the second coupling part 510-1 and the third coupling part 510-2 are embodied to include through holes 152a1, 152a2, 25, and 26, respectively, but are not limited thereto. In other embodiments, the second and third coupling parts may be embodied in various shapes sufficient to couple with the housing 140, such as a groove shape.

For example, each of the holes 152a1, 152a2 may have at least one cutout 21a for allowing the adhesive material to penetrate between each of the protrusions 143a, 143b and each of the holes 152a1, 152a2.

The second coupling portion 510-1 may include a first corner portion 501a, holes 152a2, 26 located on a first side of the housing adjacent to the first corner portion 501a, and a groove 81 located between the holes 152a2, 26.

For example, the second coupling portion 510-1 may include a first region S1 disposed in the first corner portion 501a and in which the hole 152a2 is disposed, and a second region S2 connected to the first region S1 and extended to the upper surface of the first side of the housing 140 adjacent to the first corner portion 501a.

For example, in another embodiment, the second coupling portion may be disposed on at least one of the first corner portion and one of the sides of the housing 140 adjacent to the first corner portion, and may be coupled to at least one of the first corner portion and one of the sides of the housing 140 adjacent to the first corner portion.

The second region S2 may be provided with a groove 81 into which the protrusion 31a of the housing 140 is inserted. In addition, one end of the second region S2 may be provided with a hole 26 into which the second protrusion 32a of the housing 140 is coupled.

For example, the first protrusion 143b of the first corner portion 501a of the housing 140 and the hole 152a2 of the second coupling portion 510-1 may be fused or coupled. Also, the second protrusion 32a of the housing 140 and the hole 26 of the second coupling portion 510-1 may be fused or coupled. Fusion or coupling may mean that the second protrusion 32a is bonded to the upper spring by heat.

Since the protrusions 143b, 32a located on both sides of the first protrusion 31a of the housing 140 are fused and coupled to the outer portion of the first upper spring 150-1, the embodiment can stably fix the first outer portion 510a of the first upper spring 150-1 to the housing 140 and stably couple one end of the second coil 170 to the first outer portion 510a of the first upper spring 150-1. Therefore, the embodiment can prevent breakage or damage to the second coil 170 due to external impact.

The third coupling portion 510-2 may have at least one hole 152a1, 25 located in at least one of the first corner portion 501a and another side portion of the housing 140 adjacent to the first corner portion 501a.

For example, the third coupling portion 510-2 may include a third region S3 disposed in the first corner portion 501a and in which the hole 152a1 is disposed, and a fourth region S4 connected to the third region S3 and extended to the upper surface of another side of the housing 140 adjacent to the first corner portion 501a.

A hole 25 may be provided at one end of the fourth region S4 for coupling to the housing 140 via an adhesive member. In FIG. 8, the shape of the hole 25 is cross-shaped, but the shape is not limited thereto and may be, for example, a circle, an ellipse, or a polygon.

For example, in another embodiment, the third coupling portion may be disposed on at least one of the first corner portion and any other side portion of the housing 140 adjacent to the first corner portion, and may be coupled to at least one of the first corner portion and any other side portion of the housing 140 adjacent to the first corner portion.

The second connecting portion 510-3 can connect the second connecting portion 510-1 and the third connecting portion 510-2.

For example, the second connecting portion 510-3 can connect the first region S1 of the second connecting portion 510-1 to the third region S3 of the third connecting portion 510-2, and the installation position can be guided by the second guide portion 146 of the housing 140.

For example, the second connecting portion 510-3 may be convex from the center point 101 toward the first corner portion 501a of the housing 140, but is not limited thereto, and may be convex from the corner portion 501b of the housing 140 toward the center of the housing 140.

The first coupling part 520 may have a hole 52 through which the support member 220 passes. One end of the support member 220 passing through the hole 52 may be coupled to the first coupling part 520 by a conductive adhesive member or solder 901. In addition, the first coupling part 520 and the support member 220 may be electrically connected.

The first coupling portion 520 may include a coupling region 520a that is coupled to the support member 220 by the solder 901, and the coupling region 520a may include the hole 52 and an area around the hole 520 in which the solder 901 is disposed.

The first connecting part 530 can connect at least one of the second connecting part 510-1 and the third connecting part 510-2 to the first connecting part 520.

For example, the first connecting portion 530 may include a third connecting portion 530a connecting the first region S1 of the second connecting portion 510-1 to the first connecting portion 520, and a fourth connecting portion 530b connecting the third region S3 of the third connecting portion 510-2 to the first connecting portion 520.

Each of the third connecting portion 530a and the fourth connecting portion 530b may include a bent portion that is bent at least once or a curved portion that is bent at least once, but is not limited thereto, and may be linear in other embodiments.

The width W31 of the first connecting portion 530 may be narrower than the first widths W11 and W12 of the second connecting portion 510-1, the second widths W21 and W22 of the third connecting portion 510-2, and the third width W3 of the second connecting portion 510-3.

For example, the first widths W11 and W12 may be the smallest width among the widths of the entire area of the second joint portion 510-1, the second widths W21 and W22 may be the smallest width among the widths of the entire area of the third joint portion 510-2, and the third width W3 may be the smallest width among the widths of the entire area of the second connection portion 510-3.

Since W31<W12, W31<W22, and W31<W3, the first connecting part 530 can easily move in the first direction, thereby dispersing the stress applied to the upper elastic member 150 and the stress applied to the support member 220.

The first extension portion 540 can be extended by a preset length L1 in a direction from the joining region 520a of the first joining portion 520 toward the outer portion 510a (hereinafter referred to as the "extension direction").

For example, the preset length L1 can be 0.1 mm to 2 mm. If L1 is less than 0.1 mm, the area of the first extension 540 is small, resulting in a negligible heat dissipation effect and no improvement in solderability, while if L1 exceeds 2 mm, spatial interference with the first connection part 530 and the outer part can occur.

For example, L1 may be 0.2 mm to 1.2 mm to improve solderability while at the same time sufficiently eliminating interference with the first connecting portion 530 and the outer portion.

For example, the extension direction may be a direction from the coupling region 520a of the first coupling part 520 toward at least one of the second coupling part 510-1, the third coupling part 510-2, and the second connecting part 510-3 of the outer part 510a.

The first length L1 of the first coupling part 520 may be longer than the second length L2 of the first coupling part 520. The first length L1 may be the distance from the coupling region 520a to one end of the first coupling part 520 extended in the extension direction of the first extension part 540. The second length L2 may be the distance from the coupling region 520a to the other end of the first coupling part 520 extended in the opposite direction to the extension direction of the first extension part 540.

The length L1 of the first extension portion 540 may be longer than the distance L2 from the coupling region 520a of the first coupling portion 520 to the end of the first coupling portion 520 located in the opposite direction of the extension direction (L1>L2).

Also, for example, the area of the upper surface of the first extension portion 540 may be larger than the area of the upper surface of the first coupling portion 520.

The first extension portion 540 can increase the area that transfers heat to the first coupling portion 520 during soldering to couple the first coupling portion 520 and the support member 220, thereby improving solderability.

The first extension portion 540 may be spaced apart from the outer portion 510a and the first connecting portion 530.

For example, the first extension portion 540 may be separated from the first region S1 of the second coupling portion 510-1, the third region S3 of the third coupling portion 510-2, the second connecting portion 510-3, the third connecting portion 530a, and the fourth connecting portion 530b.

The distance between the first extension 540 and the second connecting portion 510-3 may be shorter than the distance between the first extension 540 and the first region S1 of the second connecting portion 510-1 and the distance between the first extension 540 and the third region S3 of the third connecting portion 510-2, but is not limited to this.

For example, the distance between the first extension 540 and the second connection part 510-3 may be 0.03 mm to 0.2 mm. If the distance between the first extension 540 and the second connection part 510-3 is less than 0.03 mm, spatial interference between the first extension 540 and the second connection part 510-3 may occur, whereas if the distance between the first extension 540 and the second connection part 510-3 is more than 0.2 mm, the gap between the two becomes wider, making it difficult to form a damper between the first extension 540 and the second connection part 510-3.

To sufficiently eliminate such spatial interference and ensure ease of forming the damper, the distance between the first extension portion 540 and the second connection portion 510-3 may be, for example, 0.06 mm to 0.15 mm.

The shape of the first extension portion 540 may be a shape whose width increases in the extension direction to increase the heat transfer area, but is not limited thereto and may be embodied in various shapes.

For example, the first extension portion 540 may have a shape including at least one first vertex M1 located on the left side of the reference line 501 and at least one second vertex M2 located on the right side of the reference line 501, but is not limited thereto.

To support the housing 140 in a balanced manner without leaning to either side, the outer portion 510 may be symmetrical with respect to the reference line, but is not limited to this and may not be symmetrical in other embodiments.

For example, the second to third coupling parts and the second connecting parts 510-1 to 510-3 may be symmetrical with respect to a reference line (e.g., 501), but are not limited thereto.

In addition, in order to support the housing 140 in a balanced manner without leaning to either side, the first coupling portion 520 may be symmetrical with respect to the reference line, but is not limited to this and may not be symmetrical in other embodiments.

In addition, in order to support the housing 140 in a balanced manner without leaning to either side, the first connecting portion 530 may be symmetrical with respect to the reference line, but is not limited to this and may not be symmetrical in other embodiments.

In addition, in order to support the housing 140 in a balanced manner without leaning to either side, the first extension portion 540 may be symmetrical with respect to the reference line, but is not limited to this and may not be symmetrical in other embodiments.

The reference lines 501 to 504 may be straight lines passing through the center point 101 (see FIG. 7) and a corresponding one of the corners of the corner portions 501a to 501d of the housing 140.

Here, the center point 101 can be the center of the housing 140 or the center of each position of each upper spring 150-1 to 150-4.

In addition, for example, the first frame connection parts 153 of the first to fourth upper springs 150-1 to 150-4 may be rotationally symmetric (e.g., rotated 90°) with respect to the center point 101 (see FIG. 7).

For example, each of the second to fourth upper springs 150-2 to 150-4 may have a shape similar to or the same as that of the first upper spring. For example, the description of the first upper spring 150-1 in FIG. 8 may be applied to each of the second to fourth upper springs 150-2 to 150-4 .

Each of the second to fourth outer portions 510b to 510d of the second to fourth upper springs 150-2 to 150-4 may include a first coupling portion, a second coupling portion, a third coupling portion, and a second connecting portion.

The shape of the first coupling portion of the second to fourth outer parts 510b to 510d is the same as the shape of the first coupling portion 520 of the first upper spring 150-1, and the description thereof may be applied. That is, the description of the first coupling portion 520 of the first outer part 510a may be applied to each of the first coupling portions of the second to fourth outer parts 510b to 510d.

The shape of the second joint portion or the shape of the third joint portion of at least one of the second to fourth outer portions 510b to 510d may be different from the shape of the second joint portion or the shape of the third joint portion of the first outer portion.

For example, the second coupling portion of the second outer portion 510b may include a first region in which a hole 152a2 is disposed in one region of the second corner portion 501b and coupled with the first protrusion 143a1 of the second corner portion 501b. The second coupling portion of the second outer portion 510b may not include a region corresponding to the second region S2 of the second coupling portion 510-1 of the first outer portion 510a. Alternatively, the second coupling portion of the second outer portion 510b may include a region corresponding to the second region of the second coupling portion 510-1 of the first outer portion 510a, but the length of the region may be further shortened.

The third coupling portion of the second outer portion 510b may include a third region in which a hole 152a1 is provided that is disposed in another region of the second corner portion 501b and is coupled to the first protrusion 143b1 of the second corner portion 501b, and a fourth region that is connected to the third region and is extended to the upper surface of the third side of the housing 140 adjacent to the second corner portion 501b.

A groove 81 into which the protrusion 31b of the housing 140 is inserted may be provided in the fourth region of the second outer portion 510b. In addition, a hole 26 into which the second protrusion 32b of the housing 140 is coupled may be provided at one end of the fourth region.

For example, the first protrusion 143b of the second corner portion 501b of the housing 140 and the hole 152a1 of the second connecting portion of the second outer portion 510b can be fused and connected. Also, the second protrusion 32b of the housing 140 and the hole 26 of the second connecting portion of the second outer portion 510b can be fused and connected.

Since the protrusions 143b1, 32b located on both sides of the second protrusion 31b of the housing 140 are fused and coupled to the second outer portion 510b of the second upper spring 150-2, the embodiment can stably fix the second outer portion 510b of the second upper spring 150-2 to the housing 140 and stably couple the other end of the second coil 170 to the second outer portion 510b of the second upper spring 150-2. Therefore, the embodiment can prevent the second coil 170 from being broken or damaged due to external impact.

For example, the second coupling portion of the third outer portion 510c may be disposed in one region of the third corner portion 501c and may include a first region having a hole that couples with a first protrusion of the third corner portion 501c. The second coupling portion of the third outer portion 510c may not include a region that corresponds to the second region S2 of the second coupling portion 510-1 of the first outer portion 510a. Alternatively, the second coupling portion of the third outer portion 510c may include a region that corresponds to the second region S2 of the second coupling portion 510-1 of the first outer portion 510a, but the length of the region may be further shortened.

The third connection part of the third outer part 510c is the same as the third connection part 510-2 of the first outer part 510a, and the description of the third connection part 510-2 of the first outer part 510a can be applied to the third connection part of the third outer part 510c.

The second coupling portion of the fourth outer portion 510d may include a first region disposed in one region of the fourth corner portion 501d and having a hole 152a2 coupled to the first protrusion 143b of the fourth corner portion 501d, and a second region connected to the first region and extended to the upper surface of the fourth side of the housing 140 adjacent to the fourth corner portion 501d.

The third coupling portion of the fourth outer portion 510d may include a third region in which a hole 152a1 is disposed in another region of the fourth corner portion 510d and coupled with the first protrusion 143a of the fourth corner portion 501d is provided. The third coupling portion of the fourth outer portion 510d may not include a region corresponding to the fourth region of the first outer portion 510a. Alternatively, the third coupling portion of the fourth outer portion 510d may include a region corresponding to the fourth region of the third coupling portion 510-2 of the first outer portion 510a, but the length of the region may be further shortened.

The description of the second connection portion of the first outer portion 501a may be applied to the second connection portions of the second to fourth outer portions 510b to 510d.

In FIG. 7, the shape of the first outer portion 510a is partially different from the shapes of the second to fourth outer portions 510b to 510d, but is not limited to this. For example, in other embodiments, the shapes of each of the first to fourth outer portions may be embodied to be the same as the shape of the first outer portion 510a in FIG. 7.

In addition, in other embodiments, the shape of at least one of the first to fourth outer parts of the upper elastic member 150 may be the same as any one of the second to fourth outer parts 510b to 510d, or may be a combination selected from the second to fourth outer parts 510b to 510d.

The lower elastic member 160 may include a second inner frame 161 coupled to the lower portion, lower surface or lower end of the bobbin 110, a second outer frame 162 coupled to the lower portion, lower surface or lower end of the housing 140, and a second frame connection part 163 connecting the second inner frame 161 and the second outer frame 162.

In addition, the lower elastic member 160 may have a hole 161a disposed on the second inner frame 161 and coupled to the first lower coupling groove 117 of the bobbin 110 by soldering or a conductive adhesive, and a hole 162a disposed on the second outer frame 162 and coupled to the second protrusion 147 of the housing 140.

The first and second frame connection parts 153, 163 of the upper and lower elastic members 150, 160 may each be bent at least once or formed in a curved shape to form a pattern of a certain shape. Through the positional changes and minute deformations of the first and second frame connection parts 153, 163, the bobbin 110 may be elastically supported to ascend and/or descend in a first direction.

The lens driving device 100 may further include a damping member or damper 91 (see FIG. 12a) disposed between the second connecting portion 510-3 and the first extension portion 540 of each of the upper springs 150-1 to 150-4. The damper 91 may function to absorb or dampen vibrations of the support member 220 or dampen the movement of the support member 220.

For example, the damper 91 may be in contact with the second connecting portion 510-3 and the first extension portion 540 and spaced apart from the second connecting portion 510-1 and the third connecting portion 510-2, but is not limited to this.

For example, the damper 91 may be disposed between the side of the second connecting portion 510-3 and the side of the first extension portion 540 that face each other. Also, for example, the damper 91 may be disposed on the upper surface and/or the lower surface of the second connecting portion 510-3, or on the upper surface and/or the lower surface of the first extension portion 540.

In addition, the damper 91 may be separated from the corner portions 501a to 501d of the housing 140, but is not limited to this. In other embodiments, the damper 91 may be in contact with the corner portions 501a to 501d of the housing 140.

Figure 13 shows a first extension 540a and a damper 92 in another embodiment.

Referring to FIG. 13, the first extension 540 shown in FIG. 8 extends from the first coupling part 520 to the second connecting part 510-3, while the first extension 540a shown in FIG. 13 may include a second extension 540-1 extending from the first coupling part 520 to the second coupling part 510-1, a third extension 540-2 extending from the first coupling part 520 to the third coupling part 510-2, and a fourth extension 540-3 extending from the first coupling part 520 to the second connecting part 510-3 and connecting the second extension 540-1 and the third extension 540-2 to each other.

The first extension portion 540a in FIG. 13 can further increase the area that transfers heat to the first coupling portion 520 during soldering to couple the first coupling portion 520 and the support member 220, thereby further improving solderability.

In FIG. 8, the first separation distance between the second connecting portion 510-3 and the first extension portion 540 is shorter than the second separation distance between the second connecting portion 510-1 and the first extension portion 540, and the third separation distance between the third connecting portion 510-2 and the first extension portion 540.

Meanwhile, in the embodiment of FIG. 13, the first separation distance D1 between the second connecting portion 510-3 and the first extension portion 540a may be equal to the second separation distance D2 between the second connecting portion 510-1 and the first extension portion 540a, and the third separation distance D3 between the third connecting portion 510-2 and the first extension portion 540a (D1=D2=D3). As a result, the embodiment can increase the heat transfer area of the first extension portion 540a, for example, the area of the upper and lower surfaces of the first extension portion 540a, thereby improving solderability.

For example, D1, D2 and D3 can be 0.03 mm to 0.2 mm.

In addition, to eliminate spatial interference between the first extension 540a and each connecting portion and to facilitate the formation of the damper, D1, D2, and D3 may be, for example, 0.06 mm to 0.15 mm.

The lens driving device 100 may further include a damping member or damper 92 disposed in at least one of between the second coupling part 510-1 and the second extension part 540-1, between the third coupling part 510-2 and the third extension part 540-2, and between the second connecting part 510-3 and the fourth extension part 540-3. The damping member or damper 92 may absorb or dampen vibrations of the support member 220 or dampen the movement of the support member 220.

For example, the damping member or damper 92 may be disposed between the side of the second and third coupling parts 510-1, 510-2 and the side of the first extension part 540a, and between the side of the second connecting part 510-3 and the side of the first extension part 540a, and may contact the side of the second and third coupling parts 510-1, 510-3, the side of the second connecting part 510-3, and the side of the first extension part 540a.

In addition, for example, the damping member or damper 92 may be disposed on the upper surface and/or lower surface of at least one of the second and third coupling parts 510-1, 510-2 and the second connecting part 510-3, or may be disposed on the upper surface and/or lower surface of the first extension part 540a.

For example, in another embodiment, the damping member may be disposed only between the second connecting portion 510-3 and the first extension portion 540a. In this case, D1 may be smaller than D2 and D3, but is not limited thereto, and D1 may be larger than D2 and D3.

In addition, the damping member or damper 92 may be separated from the corner portions 501a-501d of the housing 140, but is not limited to this. In other embodiments, the damping member or damper 92 may be in contact with the corner portions 501a-501d of the housing 140.

To absorb and dampen vibrations of the bobbin 110, the lens driving device 100 may further include a first damping member (not shown) disposed between each of the upper springs 150-1 to 150-4 and the housing 140.

For example, a first damping member (not shown) may be disposed in the space between the first frame connection portion 153 of each of the upper springs 150-1 to 150-4 and the housing 140.

For example, the lens driving device 100 may further include a second damping member (not shown) disposed between the second frame connection portion 163 of the lower elastic member 160 and the housing 140.

For example, the lens driving device 100 may further include a third damping member disposed between the support member 220 and the hole 147a of the housing 140.

For example, the lens driving device 100 may further include a fourth damping member disposed on the first coupling portion 520 and one end of the support member 220, and may further include a fifth damping member disposed on the other end of the support member 220 and the circuit board 250.

For example, a damping member (not shown) may also be disposed between the inner surface of the housing 140 and the outer circumferential surface of the bobbin 110.

Next, we will explain the second coil 170.

The second coil 170 is disposed on the outer surface of the housing 140.

For example, the second coil 170 may be disposed on the upper side of the outer surface of each side portion 141, 142 of the housing 140.

The second coil 170 may be in the form of a ring wound to rotate in a clockwise or counterclockwise direction with respect to the optical axis. For example, the second coil 170 may be in the form of a ring covering the outer surfaces of the first and second side portions 141, 142 of the housing 140 in a clockwise or counterclockwise direction with respect to the optical axis.

The second coil 170 may be located below the upper elastic member 150 and above the magnet 130.

In the initial position of the AF movable part (e.g., the bobbin 110), the second coil 170 may not overlap with the magnet 130 in a direction perpendicular to the optical axis direction in order to reduce interference between the magnet 130 and the second coil 170.

In the initial position of the AF movable part (e.g., bobbin 110), the second coil 170 is positioned at a preset distance from the first coil 120 in the optical axis direction and does not need to overlap with the first coil 120 in a direction perpendicular to the optical axis direction. The reason for maintaining the preset distance between the first coil 120 and the second coil 170 in the optical axis direction is to ensure the linearity of the induced voltage induced in the second coil 170 by the current in the first coil 120.

In the initial position of the AF movable part, the second coil 170 may overlap with the magnet 130 in the optical axis direction, but is not limited to this, and in other embodiments, the two do not need to overlap with each other in the optical axis direction.

The second coil 170 may be disposed on the outer surface of each side 141, 142 of the housing 140 such that at least a portion of the second coil 170 is located outside the support member 220. For example, the outside of the support member 220 may be opposite the center of the opening of the housing 140 relative to the support member 220.

The second coil 170 may be an induction coil for sensing the position or displacement of the AF movable part, for example, the bobbin 110. For example, the second coil 170 may be embodied in the form of a wire, an FPCB, or an FP (Fine Pattern) coil.

For example, when the AF movable part moves due to the interaction between the first coil 120 and the magnet 130 to which a drive signal is provided, an induced voltage may be generated in the second coil 170. The magnitude of the induced voltage in the second coil 170 may vary depending on the displacement of the AF movable part. The displacement of the AF movable part can be sensed by sensing the magnitude of the induced voltage generated in the second coil 170, and an AF feedback operation can be performed using the sensed displacement of the AF movable part, thereby enabling accurate AF operation.

Figure 14 shows the mutual inductance depending on the separation distance between the first coil 120 and the second coil 170. The x-axis shows the movement displacement of the AF movable part, and the y-axis shows the magnitude of the mutual inductance.

Referring to FIG. 14, as the distance between the first coil 120 and the second coil 170 decreases due to the movement of the bobbin 110, the mutual inductance between the first coil 120 and the second coil 170 may increase. In addition, as the mutual inductance increases, the induced voltage induced in the second coil 170 may increase.

On the other hand, as the distance between the first coil 120 and the second coil 170 increases, the mutual inductance between the first coil 120 and the second coil 170 decreases, and as the mutual inductance decreases, the induced voltage induced in the second coil 170 may decrease.

In this way, the displacement of the AF movable part can be sensed based on the magnitude of the induced voltage generated in the second coil 170.

Generally, AF (Auto Focus) feedback control requires an AF moving part, such as a position sensor that can detect the displacement of the bobbin, and a separate power connection structure to drive the position sensor, which can increase the cost of the lens driving device and make manufacturing difficult.

In addition, the linear section of the graph between the bobbin's travel distance and the magnetic flux of the magnet sensed by the position sensor (hereinafter referred to as the "first linear section") may be constrained by the positional relationship between the magnet and the position sensor.

The embodiment does not require a separate position sensor to detect the displacement of the bobbin 110, which can reduce the cost of the lens driving device and improve the ease of manufacturing.

In addition, since mutual induction between the first coil 120 and the second coil 170 is used, the linear section of the graph between the travel distance of the bobbin 110 and the induced voltage of the second coil 170 may be increased compared to the first linear section. As a result, the embodiment can ensure linearity over a wide range, improve the process defect rate, and perform more accurate AF feedback control.

Next, the base 210, the support member 220, the third coil 230, the position sensor 240, and the circuit board 250 will be described.

The base 210 can be combined with the cover member 300 to form an accommodation space for the bobbin 110 and the housing 140. The base 210 can have an opening corresponding to the opening of the bobbin 110 or/and the opening of the housing 140 described above, and can have a shape that matches or corresponds to the cover member 300, for example, a rectangular shape.

The base 210 is located below the bobbin 110 and the housing 140, and may have a support groove or support portion on the surface facing the portion on which the terminal surface 253 of the circuit board 250 is formed.

The corners of the base 210 may have grooves 212. If the corners of the cover member 300 have a protruding shape, the protruding portion of the cover member 300 may be fastened to the base 210 by the grooves 212.

The base 210 may have position sensor mount grooves 215-1, 215-2 recessed from the top surface in which the position sensors 240a, 240b are disposed.

The position sensor 240 is an OIS position sensor for OIS (Optical Image Stabilizer) feedback, and may include a first position sensor 240a and a second position sensor 240b.

The first and second position sensors 240a, 240b may be disposed in respective position sensor mount grooves 215a, 215b of the base 210 located below the circuit board 250 and electrically connected to the circuit board 250. For example, the first and second position sensors 240a, 240b may be mounted on the rear surface of the circuit board 250, but are not limited thereto.

For example, each of the first and second position sensors 215a, 215b can receive a drive signal from the circuit board 250, and the output of each of the first and second position sensors 215a, 215b can be output to the circuit board 250.

The first and second position sensors 240a, 240b can sense the displacement of the housing 140 relative to the base 210 in a direction (e.g., X-axis or Y-axis) perpendicular to the optical axis (e.g., Z-axis). For example, when the housing 140 moves in the second direction and/or the third direction, the first and second position sensors 240a, 240b can sense the change in the magnetic force emitted from the magnet 130 and output a signal according to the sensed result.

For example, the first and second position sensors 240a and 240b may be implemented as Hall sensors alone or in the form of a driver including a Hall sensor, but this is merely an example and any sensor that can detect position other than magnetic force is possible.

Based on the circuit board 250, the third coil 230 may be arranged on the upper side, and the first and second position sensors 240a, 240b may be arranged on the lower side.

The circuit board 250 is disposed on the upper surface of the base 210 and may have openings corresponding to the openings in the bobbin 110, the openings in the housing 140, and/or the openings in the base 210.

The circuit board 250 may include at least one terminal surface 253 bent from the upper surface, and a plurality of terminals 251 provided on the terminal surface 253. For example, the circuit board 250 may have terminal surfaces disposed on each of any two opposing sides of the upper surface, but is not limited thereto.

For example, the circuit board 250 may include first terminals electrically connected to the support members 220-1 to 220-4 connected to the first coil 120 and the second coil 170, and second terminals electrically connected to the third coils 230-1 to 230-4.

The circuit board 250 may be, but is not limited to, a flexible printed circuit board (FPCB), and the terminals of the circuit board 1250 may be configured using a PCB or a surface electrode method on the surface of the base 210.

The circuit board 250 may include holes 250a through which the support members 220-1 to 220-4 can pass. The support members 220-1 to 220-4 may be electrically connected to a circuit pattern disposed on the bottom surface of the circuit board 250 via the holes 250a of the circuit board 250, for example by soldering.

In other embodiments, the circuit board 250 may not have holes 250a, and each support member 220-1 to 220-4 may be electrically connected to a circuit pattern or pad formed on the upper surface of the circuit board 250 by soldering or the like.

The circuit board 250 may further include holes that are connected to protrusions provided on the upper surface of the base 210 via heat fusion or an adhesive material, etc.

The third coil 230 corresponds to or is aligned with the magnet 130 and is disposed on the upper surface of the circuit board 250. The number of the third coils 230 may be one or more and may be the same as the number of the magnets 130, but is not limited thereto.

For example, the third coil 230 may include a plurality of OIS coils 230-1 to 230-4 formed in a substrate 231 separate from the circuit board 250, but is not limited thereto. In other embodiments, each OIS coil 230-1 to 230-4 may be disposed spaced apart from one another on the circuit board 250 without a separate substrate.

The substrate 231 on which the third coil 230 is formed may have escape grooves 23 at each corner through which each of the support members 220-1 to 220-4 can pass.

Each of the OIS coils 230-1 to 230-4 may be electrically connected to the circuit board 250. A drive signal, e.g., a drive current, may be provided to each of the OIS coils 230-1 to 230-4.

Each magnet 130-1 to 130-4 and each OIS coil 230-1 to 230-4 faces or is aligned with each other in a direction parallel to the optical axis, and the housing 140 can move in the second and/or third directions due to the electromagnetic force generated by the interaction between the magnet 130 and each OIS coil 230-1 to 230-4 to which a drive signal is applied, and such movement of the housing 140 can be controlled to correct hand tremors.

Next, we will explain the support member 220.

One end of the support member 220 may be coupled to the upper elastic member 150 by soldering or a conductive adhesive, and the other end of the support member 220 may be coupled to the circuit board 250, but is not limited to this. In another embodiment, the other end of the support member 220 may be coupled to the circuit member 231 and/or the base 210, in which case the circuit member 231 or the base 210 coupled to the other end of the support member 220 may be electrically connected to the circuit board 250.

There are multiple support members 220, and the multiple support members 220-1 to 220-4 can be positioned to correspond to the second side 142 of the housing 140.

Each of the plurality of support members 220-1 to 220-4 may be coupled to a corresponding one of the first coupling parts 520 of each of the upper springs 150-1 to 150-4 through solder 901 and electrically connected to the first coupling part 520.

The multiple support members 220-1 to 220-4 can support the bobbin 110 and the housing 140 so that the bobbin 110 and the housing 140 can move in a direction perpendicular to the first direction.

For example, each of the plurality of support members 220-1 to 220-4 may be disposed adjacent to a corresponding one of the four second side portions 142. For example, each of the support members 220-1 to 220-4 may be located inside the ring-shaped second coil 170.

In FIG. 9, one support member is disposed on each of the second sides of the housing 140, but this is not limiting.

In other embodiments, two or more support members may be disposed on each of the second sides of the housing 140, and the upper elastic member 150 may include two or more upper elastic members that are separated from each other and spaced apart on at least one of the second sides of the housing 140. For example, two support members disposed on any one of the second sides of the housing 140 may be connected to a corresponding one of the two upper elastic members that are separated from each other and disposed on any one of the second sides.

Each of the multiple support members 220-1 to 220-4 is spaced apart from the housing 140 and is not fixed to the housing 140, but may be directly connected to the first coupling portion 520 of the first outer frame 152 of each upper spring 150-1 to 150-4.

In other embodiments, the support member 220 may be arranged in the form of a leaf spring on the side 141 of the housing 140.

A drive signal is transmitted from the circuit board 250 to the first coil 120 through the multiple support members 220-1 to 220-4 and each upper spring 150-1 to 150-4, and an induced voltage output from the second coil 170 can be transmitted to the circuit board 250.

For example, the induced voltage of the second coil 170 can be transmitted to the circuit board 250 through the second and third upper springs 150-2, 150-3 and the second and third support members 220-2, 220-3. Also, a power supply or a drive signal can be transmitted from the circuit board 250 to the first coil 120 through the first and fourth upper springs 150-1, 150-4 and the first and fourth support members 220-1, 220-4.

The plurality of support members 220-1 to 220-4 may be formed as separate members from the upper elastic member 150 and may be embodied as members capable of providing elastic support, such as leaf springs, coil springs, suspension wires, etc. In another embodiment, each of the support members 220-1 to 220-4 may be formed integrally with the upper elastic member 150.

Figure 11 is a plan view of Figure 3, Figure 12a is a perspective view of the first dotted line portion 41 of Figure 11, and Figure 12b is a perspective view of the second dotted line portion 42 of Figure 11.

Referring to Figures 11, 12a and 12b, a portion of the second coil 170 is wound at least one turn around the first protrusion 31a of the housing 140 and is coupled to the second region S2 of the outer portion 510a of the upper spring (e.g., 150-1) by the first solder portion 71, and can be electrically connected to the upper spring (e.g., 150-1).

In addition, another portion of the second coil 170 may be wound at least one turn around the second protrusion 31b of the housing 140 and may be coupled to the second region S2 of the outer portion 510d of the first outer frame 152 of the upper spring (e.g., 150-2) by the second solder portion 72, and may be electrically connected to the upper spring (e.g., 150-2).

A portion of the second coil 170 disposed in the housing 140 may include a first extension line 17f wound at least once around the first protrusion 31a of the housing 140 and extending to the first outer frame 152 of the upper spring 150-1, and a first solder part 71 may be disposed on the first extension line 17f and the first outer frame 152 of the first upper spring 150-1. In addition, the first extension line 17f and the first outer frame 152 of the upper spring (e.g., 150-1) may be electrically connected to each other by the first solder part 71.

In addition, another portion of the second coil 170 disposed in the housing 140 may include a second extension wire 17g wound at least once around the second protrusion 31b of the housing 140 and extending to the first outer frame 152 of the upper spring 150-2, and a second solder part 72 may be disposed on the second extension wire 17g and the first outer frame 152 of the upper spring 150-2. In addition, the second extension wire 17g and the first outer frame 152 of the upper spring 150-2 may be electrically connected to each other by the second solder part 72.

The reason why both ends of the second coil 170 are wound around the first and second protrusions 31a and 31b of the housing 140 is to allow one end of the second coil 170 to be soldered to the first outer frame of the first upper spring 150-1 and the other end of the second coil 170 to be soldered to the first outer frame of the second upper spring 150-2 without the need for separate wiring arrangement. In addition, by stably and firmly fixing both ends of the second coil 170 to the first and second protrusions 31a and 31b of the housing 140, it is possible to prevent breakage of the second coil 170 due to impact, and to prevent movement or shaking of the second coil 170 during soldering, thereby improving solderability.

For example, the second coil 170 may include a first portion 17a disposed on the outer surface of the housing 140 (e.g., the mounting groove 148 for the second coil), a second portion 17b wound around the first protrusion 31a of the housing 140, a third portion 17c connecting one end of the first portion 17a to the second portion 17b, a fourth portion 17d wound around the second protrusion 31b of the housing 140, a fifth portion 17e connecting the other end of the first portion 17a to the fourth portion 17d, a sixth portion 17f extending from one end of the second portion 17b, and a seventh portion 17g extending from one end of the fourth portion 17d.

The third portion 17c of the second coil 170 may be disposed in a groove 61a located on the first side of the housing 140. The fifth portion 17e of the second coil 170 may be disposed in a groove 61b located on the third side of the housing 140.

The first portion 17a is a portion where an induced voltage occurs due to interaction with the first coil 120, and may be expressed as the "main body" of the second coil 170, the second portion 17b as the "first winding member", the third portion 17c as the "first connection line", the fourth portion 17d as the "second winding member", and the fifth portion 17e as the "second connection line".

For example, the first solder part 71 may be spaced apart from the second portion 17b of the second coil 170. Also, the second solder part 72 may be spaced apart from the fourth portion 17d of the second coil 170. This may further increase the length of the second coil 170.

The second coil 170 may include a conductive wire and a coating (e.g., an insulating portion) covering the conductive wire, and the conductive wire of the first extension 17f and the second extension 17g of the second coil 170 may be exposed from the coating. This is to provide an electrical connection between the second coil 170-1 and the first and second lower springs 160-1 and 160-2 through the connection between the exposed conductive wire portion of the first extension 17f (or the second extension 17g) and the first solder portion 71 (or the second solder portion 72).

Since the second coil 170 is extended to the second region S2 of the second coupling part 510-1 of the first outer frame of each upper spring 150-2, 150-3, the length of the second coil 170 can be increased, and as the length of the second coil 170 increases, the resistance of the second coil 170 can also increase. As a result, the magnitude of the induced voltage induced in the second coil 170 can increase, thereby improving the sensitivity for detecting the position of the bobbin 110 for AF feedback drive.

In another embodiment, the first and second extension wires 17f, 17g may be omitted, and the second coil 170 may include the first to fifth parts 17a to 17e, and the first solder part may be disposed on the second part 17b of the second coil and the second outer frame of the upper spring 150-2, and the second solder part may be disposed on the fourth part of the second coil and the second outer frame of the upper spring 150-3. In this case, the conductive wires of the second and fourth parts 17b, 17d of the second coil may be exposed from the coating. Also, the second coil and each of the upper springs 150-2, 150-3 may be electrically connected by the first and second solder parts.

In another embodiment, the second coil 170 may include a first portion 17a disposed on the outer surface of the housing 140 (e.g., the mounting groove 148 for the second coil), a second portion 17b wound around the first protrusion 31a of the housing 140, a third portion 17d wound around the second protrusion 31b of the housing 140, a first connecting wire (or a first connecting portion) 17c connecting one end of the first portion 17a to the second portion 17b, a second connecting wire (or a second connecting portion) 17e connecting the other end of the first portion 17a to the third portion 17d, a first extension portion 17f extending from one end of the second portion 17b, and a second extension portion 17g extending from one end of the fourth portion 17d.

The embodiments shown in FIGS. 1 to 13 use an induced voltage due to mutual induction between the first coil 120 and the second coil 170 for AF feedback operation. However, in other embodiments, the second coil 170 may be omitted in FIGS. 1 to 13 for AF feedback operation. Other embodiments may also include an AF position sensor disposed in the housing 140 or the bobbin 110. In this case, the housing 140 or the bobbin 110 may be provided with a mounting groove in which the AF position sensor is mounted. Other embodiments may further include a circuit board disposed in the housing 140 or the bobbin 110 for mounting the AF position sensor.

In addition, other embodiments may further include a separate sensing magnet corresponding to the AF position sensor in a direction perpendicular to the optical axis. When the AF position sensor is disposed on the bobbin 110, the sensing magnet may be disposed on the housing 140. Also, when the AF position sensor is disposed on the housing 140, the sensing magnet may be disposed on the bobbin 110.

The AF position sensor can be electrically connected to the circuit board 250 through each of the multiple divided upper springs and/or at least one lower spring, and each of the support members 220-1 to 220-4.

The AF position sensor may be implemented in the form of a driver including a Hall sensor, or may be implemented as a position detection sensor alone, such as a Hall sensor.

The AF position sensor may include two input terminals to which a drive signal is provided from the circuit board 250, and two output terminals that output a signal based on the result of sensing the strength of the magnetic force of the magnet and/or the sensing magnet due to the movement of the AF movable part.

On the other hand, the lens driving device of the above-mentioned embodiment can be used in a variety of fields, for example, in camera modules or optical devices.

For example, the lens driving device 100 according to the embodiment may be included in an optical device that uses the properties of light, such as reflection, refraction, absorption, interference, and diffraction, to form an image of an object in space, aiming to increase the visual acuity of the eye, record and reproduce an image using a lens, perform optical measurements, and propagate or transmit an image. For example, the optical device according to the embodiment may include a smartphone and a portable terminal equipped with a camera.

Figure 15 is an exploded perspective view of the camera module 200 according to the embodiment.

Referring to FIG. 15, the camera module 200 may include a lens or lens barrel 400, a lens driving device 100, an adhesive member 612, a filter 610, a first holder 600, a second holder 800, an image sensor 810, a motion sensor 820, a control unit 830, and a connector 840. The first holder 600 may be expressed as a "sensor base" and the second holder 800 may be expressed as a "circuit board" or a "board".

The lens or lens barrel 400 can be attached to the bobbin 110 of the lens driving device 100.

The first holder 600 may be disposed below the base 210 of the lens driving device 100. The filter 610 is attached to the first holder 600, and the first holder 600 may include a protrusion 500 on which the filter 610 is mounted.

The adhesive member 612 can connect or attach the base 210 of the lens driving device 100 to the first holder 600. In addition to the adhesive role described above, the adhesive member 612 can also serve to prevent foreign matter from entering the inside of the lens driving device 100.

For example, the adhesive member 612 may be an epoxy, a heat curable adhesive, a UV curable adhesive, etc.

The filter 610 may function to block light of a specific frequency band passing through the lens barrel 400 from entering the image sensor 810. For example, the filter 610 may be an infrared blocking filter, but is not limited thereto, and in other embodiments, may be an infrared passing filter. In this case, the filter 610 may be arranged parallel to the x-y plane.

An opening may be formed in the portion of the first holder 600 where the filter 610 is mounted so that light passing through the filter 610 can enter the image sensor 810.

The second holder 800 is disposed under the first holder 600, and an image sensor 810 may be mounted on the second holder 800. The image sensor 810 may include an active area, an imaging area, or an effective area, where light passing through the filter 610 is incident and an image contained in the light is formed.

The second holder 800 may be provided with various circuits, elements, control units, etc. to convert the image formed on the image sensor 810 into an electrical signal and transmit it to an external device.

The second holder 800 can be embodied as a circuit board on which an image sensor is mounted and a circuit pattern is formed to which various elements are connected.

The image sensor 810 can receive the image contained in the light incident through the lens driving device 100 and convert the received image into an electrical signal.

The filter 610 and the image sensor 810 may be spaced apart and disposed facing each other in the first direction.

The motion sensor 820 may be mounted on the second holder 800 and electrically connected to the control unit 830 through a circuit pattern provided on the second holder 800.

The motion sensor 820 outputs rotational angular velocity information according to the movement of the camera module 200. The motion sensor 820 may be embodied as a two-axis or three-axis gyro sensor or an angular velocity sensor.

The control unit 830 is mounted on the second holder 800. The second holder 800 may be electrically connected to the lens driving device 100. For example, the second holder 800 may be electrically connected to the first coil 120 and the second coil 170 of the lens driving device 100.

For example, a drive signal may be provided to the first coil 120 through the second holder 800, and the induced voltage of the second coil 170 may be transmitted to the second holder 800. For example, the induced voltage of the second coil 170 may be received by the control unit 830.

The connector 840 is electrically connected to the second holder 800 and may have a port for electrically connecting to an external device.

The image sensor 810 may include a pixel array section including a plurality of unit pixels, a sensing control section that provides control signals for controlling each transistor included in each unit pixel, and an analog-to-digital conversion section that converts an analog signal output from each unit pixel of the pixel array section 905 into a digital signal.

Figure 16 is a perspective view of a portable terminal 200A according to an embodiment, and Figure 18 is a configuration diagram of the portable terminal 200A shown in Figure 17.

Referring to FIG. 16 and FIG. 17, the portable terminal 200A (hereinafter referred to as "terminal") may include a body 850, a wireless communication unit 710, an A/V input unit 720, a sensing unit 740, an input/output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 16 is bar-shaped, but is not limited thereto, and may have various structures such as a slide type, folder type, swing type, swivel type, etc., in which two or more sub-bodies are connected to be movable relative to one another. The body 850 may include a case (casing, housing, cover, etc.) that forms the exterior.

The wireless communication unit 710 may be configured to include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and a network in which the terminal 200A is located. For example, the wireless communication unit 710 may be configured to include a broadcast receiving module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715.

The A/V (Audio/Video) input unit 720 is for inputting audio or video signals, and may include a camera 721 and a microphone 722, etc.

The camera 721 may include a camera module 200 according to an embodiment.

The sensing unit 740 can sense the current state of the terminal 200A, such as the open/closed state of the terminal 200A, the position of the terminal 200A, the presence or absence of user contact, the orientation of the terminal 200A, and the acceleration/deceleration of the terminal 200A, and generate a sensing signal to control the operation of the terminal 200A.

The input/output unit 750 is for generating input or output related to vision, hearing, touch, etc. The input/output unit 750 can generate input data for operational control of the terminal 200A and can display information processed by the terminal 200A.

The input/output unit 750 may include a keypad unit 730, a display module 751, an audio output module 752, and a touch screen panel 753. The keypad unit 730 may generate input data through keypad input.

The display module 751 may include a number of pixels whose colors change in response to electrical signals.

The audio output module 752 can output audio data received from the wireless communication unit 710 in a call signal reception, a telephone call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or output audio data stored in the memory unit 760.

The touch screen panel 753 can convert changes in capacitance caused by a user touching a particular area of the touch screen into an electrical input signal.

The memory unit 760 may store a program for processing and controlling the control unit 780. For example, the memory unit 760 may store images captured by the camera 721, such as photos or videos.

The interface unit 770 receives data from an external device, receives power and transmits it to each component inside the terminal 200A, and enables data inside the terminal 200A to be transmitted to an external device.

The control unit 780 may control the overall operation of the terminal 200A. For example, the control unit 780 may perform related control and processing for voice calls, data communications, video calls, etc.

The control unit 780 may include a multimedia module 781 for multimedia playback, a camera control unit 782 for controlling the camera, and a display control unit 783 for controlling the input/output unit 750.

The power supply unit 790 can receive an external power source or an internal power source under the control of the control unit 780 and supply the power required for the operation of each component.

The features, structures, effects, etc. described in each of the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by a person having ordinary knowledge in the field to which each embodiment belongs. Therefore, each content related to such combinations and modifications should be interpreted as being included in the scope of the embodiments of the present invention.

The embodiment can be used in lens drive devices that can improve solderability, as well as camera modules and optical devices that include the lens drive devices.

Claims (16)

housing;
a bobbin disposed within the housing;
a first coil disposed on the bobbin;
a magnet disposed in the housing;
an upper spring coupled to an upper portion of the bobbin and an upper portion of the housing;
a circuit board disposed on an underside of the housing;
a support member electrically connecting the upper spring and the circuit board; and a damper disposed on the upper spring.
a second coil disposed on an outer surface of a side of the housing and generating an induced voltage by interaction with the first coil;
The upper spring is
an outer portion coupled to the housing;
a first coupling portion coupled to the support member; and a first coupling portion connecting the outer portion and the first coupling portion,
the first coupling portion further includes a first extension portion extending from the first coupling portion toward the outer portion,
the first extension portion is spaced from the outer portion;
The damper connects the first extension portion and the outer portion,
The housing includes a first protrusion and a second protrusion disposed on an upper surface thereof,
The upper spring includes a first spring and a second spring,
A lens driving device, wherein a portion of the second coil is wound around the first protrusion at least one time, is positioned on the first protrusion, and is connected to the first spring, and another portion of the second coil is positioned on the second protrusion, is wound around the second protrusion at least one time, and is connected to the second spring. The lens driving device of claim 1, wherein the outer portion is coupled to the housing at a corner of the housing. The outer portion is
a second coupling portion disposed on a first side of the housing and coupled to the housing;
a third coupling portion disposed on a second side portion adjacent to the first side portion of the housing and coupled to the housing; and a second coupling portion coupling the second coupling portion and the third coupling portion,
The first connecting portion is
The lens driving device according to claim 2 , further comprising: a third connecting portion connecting the second connecting portion and the first connecting portion; and a fourth connecting portion connecting the third connecting portion and the first connecting portion. The damper is disposed between the first extension portion and the second connection portion,
The lens driving device according to claim 3 , wherein the first extension portion is spaced apart from each of the third connecting portion and the fourth connecting portion. The first extension portion is
a second extension portion extending from the first coupling portion to the second coupling portion;
The lens driving device according to claim 3 , further comprising: a third extension portion extending from the first coupling portion to the third coupling portion; and a fourth extension portion extending from the first coupling portion to the second coupling portion. The lens driving device according to any one of claims 1 to 5, wherein the first extension portion includes a portion having a width that increases as it extends from the first connecting portion toward the outer portion. The lens driving device according to any one of claims 1 to 6, wherein the portion of the first extension that corresponds to the outer portion includes a shape that corresponds to the shape of the outer portion. The first coupling portion includes a coupling region coupled to the support member,
a first length of the first coupling portion is greater than a second length of the first coupling portion;
5. The lens driving device of claim 4, wherein the first length is a distance from the connection region to one end of the first connection portion extended in the extension direction of the first extension portion, and the second length is a distance from the connection region to the other end of the first connection portion extended in the opposite direction to the extension direction of the first extension portion. The lens driving device according to any one of claims 1 to 8, wherein the first extension is symmetrical with respect to a reference line, the reference line is a straight line passing through a center point and a corner of the housing, and the center point is the center of the housing or the center of the upper spring. The damper contacts a side surface of the first extension portion and a side surface of the outer portion,
10. The lens driving device according to claim 1, wherein the damper contacts an upper surface or a lower surface of at least one of the first extension portion and the outer portion. The upper spring is
a first upper spring electrically connected to one end of the first coil;
a second upper spring electrically connected to the other end of the first coil;
The lens driving device according to any one of claims 1 to 10, further comprising: a third upper spring electrically connected to one end of the second coil; and a fourth upper spring electrically connected to the other end of the second coil. The support member is
a first support member connected to the first upper spring;
a second support member coupled to the second upper spring;
The lens driving device according to claim 11 , comprising: a third support member connected to the third upper spring; and a fourth support member connected to the fourth upper spring. The lens driving device according to any one of claims 1 to 12, wherein the area of the upper surface of the first extension portion is greater than the area of the upper surface of the first connecting portion. The lens driving device according to any one of claims 1 to 13, wherein the second coil includes a ring-shaped portion that covers the outer peripheral surface of the housing. The lens driving device according to any one of claims 1 to 14, wherein the damper is a buffer member that absorbs or buffers vibrations of the support member. The lens driving device according to any one of claims 1 to 15, wherein the damper is spaced apart from the housing.

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